<template>
  <main class="site-content" :class="{ 'site-content--tabs': $route.meta.isTab }">
    <!-- 主入口标签页 s -->
    <el-tabs
      v-if="$route.meta.isTab"
      v-model="mainTabsActiveName"
      :closable="true"
      @tab-click="selectedTabHandle"
      @tab-remove="removeTabHandle"
    >
      <el-dropdown class="site-tabs__tools" :show-timeout="0">
        <i class="el-icon-arrow-down el-icon--right" />
        <el-dropdown-menu slot="dropdown">
          <el-dropdown-item @click.native="tabsCloseCurrentHandle">关闭当前标签页</el-dropdown-item>
          <el-dropdown-item @click.native="tabsCloseOtherHandle">关闭其它标签页</el-dropdown-item>
          <el-dropdown-item @click.native="tabsCloseAllHandle">关闭全部标签页</el-dropdown-item>
          <el-dropdown-item @click.native="refresh()">刷新当前标签页</el-dropdown-item>
        </el-dropdown-menu>
      </el-dropdown>
      <el-tab-pane v-for="item in mainTabs" :key="item.name" :label="item.title" :name="item.name">
        <el-card :body-style="siteContentViewHeight">
          <iframe v-if="item.type === 'iframe'" :src="item.iframeUrl" width="100%" height="100%" frameborder="0" scrolling="yes" />
          <keep-alive v-else>
            <router-view v-if="item.name === mainTabsActiveName" />
          </keep-alive>
        </el-card>
      </el-tab-pane>
    </el-tabs>
    <!-- 主入口标签页 e -->
    <el-card v-else :body-style="siteContentViewHeight">
      <keep-alive>
        <router-view />
      </keep-alive>
    </el-card>
  </main>
</template>

<script>
import { isURL } from '@/utils/validate'
export default {
  inject: ['refresh'],
  data() {
    return {
    }
  },
  computed: {
    documentClientHeight: {
      get() { return this.$store.state.common.documentClientHeight }
    },
    menuActiveName: {
      get() { return this.$store.state.common.menuActiveName },
      set(val) { this.$store.commit('common/updateMenuActiveName', val) }
    },
    mainTabs: {
      get() { return this.$store.state.common.mainTabs },
      set(val) { this.$store.commit('common/updateMainTabs', val) }
    },
    mainTabsActiveName: {
      get() { return this.$store.state.common.mainTabsActiveName },
      set(val) { this.$store.commit('common/updateMainTabsActiveName', val) }
    },
    siteContentViewHeight() {
      var height = this.documentClientHeight - 50 - 30 - 2
      if (this.$route.meta.isTab) {
        height -= 40
        return isURL(this.$route.meta.iframeUrl) ? { height: height + 'px' } : { minHeight: height + 'px' }
      }
      return { minHeight: height + 'px' }
    }
  },
  methods: {
    // tabs, 选中tab
    selectedTabHandle(tab) {
      tab = this.mainTabs.filter(item => item.name === tab.name)
      if (tab.length >= 1) {
        this.$router.push({ name: tab[0].name, query: tab[0].query, params: tab[0].params })
      }
    },
    // tabs, 删除tab
    removeTabHandle(tabName) {
      this.mainTabs = this.mainTabs.filter(item => item.name !== tabName)
      if (this.mainTabs.length >= 1) {
        // 当前选中tab被删除
        if (tabName === this.mainTabsActiveName) {
          var tab = this.mainTabs[this.mainTabs.length - 1]
          this.$router.push({ name: tab.name, query: tab.query, params: tab.params }, () => {
            this.mainTabsActiveName = this.$route.name
          })
        }
      } else {
        this.menuActiveName = ''
        this.$router.push({ name: 'home' })
      }
    },
    // tabs, 关闭当前
    tabsCloseCurrentHandle() {
      this.removeTabHandle(this.mainTabsActiveName)
    },
    // tabs, 关闭其它
    tabsCloseOtherHandle() {
      this.mainTabs = this.mainTabs.filter(item => item.name === this.mainTabsActiveName)
    },
    // tabs, 关闭全部
    tabsCloseAllHandle() {
      this.mainTabs = []
      this.menuActiveName = ''
      this.$router.push({ name: 'dashboard' })
    },
    // tabs, 刷新当前
    tabsRefreshCurrentHandle() {
      var tab = this.$route
      this.removeTabHandle(tab.name)
      this.$nextTick(() => {
        this.$router.push({ name: tab.name, query: tab.query, params: tab.params })
      })
    }
  }
}
</script>
